Finding the Fourth Proportional to 20,838,495.80, 31,257,743.70 and 5,692,427.30
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Solution
The fourth proportional to 20,838,495.80, 31,257,743.70 and 5,692,427.30 is: 8,538,640.95
Step by Step Solution
- Step 1: Write the proportion equation
20,838,495.80 : 31,257,743.70 = 5,692,427.30 : x - Step 2: Convert to fraction form
20,838,495.80/31,257,743.70 = 5,692,427.30/x - Step 3: Cross multiply
20,838,495.80x = 31,257,743.70 × 5,692,427.30 - Step 4: Simplify right side
20,838,495.80x = 177,932,433,574,283 - Step 5: Solve for x
x = 177,932,433,574,283/20,838,495.80 - Step 6: Final answer
x = 8,538,640.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.